Description: Durable and high strength: Made of durable stainless steel material, this spot welding drill set owns high strength and hardness, which is quite durable for long time use. Powerful and Practical: This is a ideal tool set for removing spot welded panels or metal sheets without deforming the metal or damaging the underlying panel. Double Sided Design: Double-sided blades provide twice the efficiency, which avoid the risk of having to take a break in the middle of a job due to dull blades. Easy to use: The center spindle on the drill is spring loaded and depresses to allow tension and provide advice on how to start the cut. Specification: Type: Spot Welding Drill Set Material: metal Color: Black Quantity: 13 pcs Size Chart: Sawtooth part diameter: 3/8 "(9.5mm) Package Includes: 1x Spot Welding Drill 10x 3/8 cutter 2x pin Note: 1. Please allow slightly error due to manual measurement. 2. Due to the difference between different monitors, the picture may not reflect the actual color of the item. 3. Wish you a wonderful on-line shopping!